Fix regex literal loc #7680

Job	Run time
build-compiler (ubuntu-24.04, ocaml-variants.5.3.0+options,ocaml-option-static, true, true, linux...	2m 6s
build-compiler (macos-13, 5.3.0, true, darwin-x64, x86_64-apple-darwin)	10m 6s
build-compiler (windows-latest, 5.3.0, true, win32-x64, x86_64-pc-windows-gnu)	4m 21s
build-compiler (macos-14, 5.3.0, true, darwin-arm64, aarch64-apple-darwin)	3m 5s
build-compiler (ubuntu-24.04, ocaml-variants.5.0.0+options,ocaml-option-static, linux-x64, x86_64...	2m 2s
build-compiler (ubuntu-24.04-arm, ocaml-variants.5.3.0+options,ocaml-option-static, true, true, t...	3m 49s
build-compiler (ubuntu-24.04, ocaml-variants.4.14.2+options,ocaml-option-static, linux-x64, x86_6...	2m 12s
build-compiler (ubuntu-24.04, ocaml-variants.5.2.1+options,ocaml-option-static, linux-x64, x86_64...	1m 59s
pkg-pr-new	50s
api-docs	2m 12s
test-installation-pnpm (macos-13)	27s
test-installation-pnpm (ubuntu-24.04)	13s
test-installation-npm (macos-13)	29s
test-installation-npm (ubuntu-24.04)	20s
test-installation-pnpm (macos-14)	14s
test-integration-rewatch (ubuntu-24.04)	39s
test-installation-npm (windows-latest)	41s
test-installation-npm (macos-14)	21s
test-integration-rewatch (macos-14)	41s
test-integration-rewatch (macos-13)	54s
test-installation-pnpm (windows-latest)	50s
test-integration-rewatch (windows-latest)	1m 2s
test-integration-rewatch (ubuntu-24.04-arm)	36s
test-installation-pnpm (ubuntu-24.04-arm)	21s
test-installation-npm (ubuntu-24.04-arm)	16s
publish	0s
	40m 46s

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